Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan tu co snippets" » "danh tu co snippets", "dan su co snippets", "ban tu co snippets", "dan ty co snippets", "dan tu so snippets", "dan tu do snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dan tu co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan tu co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan tu co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan tu co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.